Case Compact Track Loader 150

Warning: This procedure requires trained personnel with PPE!

IMPORTANT: Under no circumstances should a pry bar be used on the starter - generator to obtain belt tension, as damage to the bearings could result.

Is the belt excessively loose or worn?

Is the belt tension correct (can be depressed 1/4\ between the pulleys)?"

Sign off on the belt adjustment

Ensure the drive belt is adjusted properly before starting the procedure.

Disconnect all cables and wires to generator.

Connect ammeter and variable resistance in series between the 'A' terminal and generator frame.

Connect voltmeter from the 'A' terminal to the frame.

Install jumper lead from the 'F' terminal to the frame.

Drive the unit at specified RPM.

Adjust to specified voltage by varying the resistance.

Check if the ammeter reading is lower than specified amperage.

If amperage output is too high, follow the next steps.

Warning: This procedure should be performed by trained personnel only!

Initial voltage reading from the volt meter

Connect a load equal to 3 times the amp hour rating of the battery

Volt meter reading after 15 seconds

Is the volt meter reading less than 9.5 volts?

Sign off on the battery bench load test

NOTE: On Spark Ignition engines remove the center coil wire to prevent engine from starting

Connect a volt meter (12 volt) between the positive and negative terminals of the battery, Figure F-5

Crank the engine for 15 seconds and record voltage

Connect voltmeter (12 volt) between the starter generator 'A' terminal and ground on starter generator frame, Figure F-5

Crank the engine and record voltage

If voltage is not the same or varies more than .5 volt, check the battery cables, clean and tighten connections

Sign off on the battery cranking voltage test

Warning: This inspection requires trained personnel with PPE!

Enter the machine's hour meter reading

Are the breaker contact points in good condition?

Describe the color of the contact points

If the contact points are blue, select the possible cause

Describe the wear pattern of the contact surfaces